A helicopter is flying 8 kilometers above the ground. It has a gravitational potential energy of 376 Joules. What would the mass be?

0.0048kg

Explanation:

Given parameters:

Height of flight  = 8km  = 8000m

Gravitational potential energy  = 376J

Unknown:

Mass  = ?

Solution:

To solve this problem;

     Gravitational potential energy  = mgh

m is the mass of the body

g is the acceleration due to gravity

h is the height of the helicopter

    Insert the parameters and solve;

       376  = m x 9.8 x 8000

       376  = 78400m

         m  = 0.0048kg

b) 10 minutes

girls stopped for 10 minutes.

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